Class Menu - Win32 Programmer's Reference

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Class Menu

A class menu defines the default menu to be used by the windows in the class if no explicit menu is given when the windows are created. A menu is a list of commands from which a user can choose actions for the application to carry out.

You can assign a menu to a class by setting the lpszMenuName member of the WNDCLASSEX structure to the address of a null-terminated string that specifies the resource name of the menu. The menu is assumed to be a resource in the given application. Windows automatically loads the menu when it is needed. Note that if the menu resource is identified by an integer and not by a name, the application can set the lpszMenuName member to that integer by applying the MAKEINTRESOURCE macro before assigning the value.

Windows does not require a class menu. If an application sets the lpszMenuName member of the WNDCLASSEX structure to NULL, Windows assumes the windows in the class have no menu bars. Even if no class menu is given, an application can still define a menu bar for a window when it creates the window.

Windows does not allow menu bars with child windows. If a menu is given for a class and a child window of that class is created, the menu is ignored. For more information, see Menus.

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